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Finding the Fourth Proportional to 60,700.72, 90,995 and 38,446.80

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Solution

The fourth proportional to 60,700.72, 90,995 and 38,446.80 is: 57,634.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,700.72 : 90,995 = 38,446.80 : x
  2. Step 2: Convert to fraction form
    60,700.72/90,995 = 38,446.80/x
  3. Step 3: Cross multiply
    60,700.72x = 90,995 × 38,446.80
  4. Step 4: Simplify right side
    60,700.72x = 3,498,466,566.00
  5. Step 5: Solve for x
    x = 3,498,466,566.00/60,700.72
  6. Step 6: Final answer
    x = 57,634.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.